- California✖Remove constraint Collection place: California38 objects
- North America38 objects
- The Americas38 objects
- United States38 objects
- Northern California20 objects
- San Francisco Bay Area, California17 objects
- North Central California13 objects
- Sacramento County, California11 objects
- CA-Sac-2 or 3 or 6 ('Johnson Mound'), Sacramento County, California10 objects
- CA-Sac-6, Sacramento County, California10 objects
- Contra Costa County, California7 objects
- CA-CCo-141, Palm Tract, Contra Costa County6 objects
- Palm Tract, Contra Costa County, California6 objects
- Unincorporated eastern Contra Costa County, California6 objects
- Northwestern California5 objects
- Marin County, California3 objects
- San Francisco County, California3 objects
- San Francisco, San Francisco County, California3 objects
- Alameda County, California2 objects
- Berkeley, Alameda County, California2 objects